ANTIGENIC GROUP B STREPTOCOCCUS TYPE II AND TYPE III POLYSACCHARIDE FRAGMENTS HAVING A 2, 5-ANHYDRO-D-MANNOSE TERMINAL STRUCTURE AND CONJUGATE VACCINE THEREOF

摘要

The process for depolymerizing Group B Types II and III Streptococcal Polysaccharide is disclosed which results in polysaccharide fragments having a reducing end suitable for conjugating to protein. Conjugate molecules, vaccines and their use to immunize mammals including humans are also disclosed.